Shrink packaging process

Details Shrink packaging process Shrink packaging process

1985-01-11

1986-03-18

Spruill, Robert L.

Package making

Methods

With contents treating

53442, 53469, B65B 3104

Patent

active

045759901

ABSTRACT:
The invention provides a process for packaging a product article such as meat, in a plastics bag (1) by injecting a hot gas, in this case steam, into the bag interior from behind the product article (2) using a nozzle (3) to flush air (at 5) from the bag (1) and to impart shrinking heat to the material forming the bag.
When using steam, or another vapor capable of condensing at atmospheric pressure above room temperature, the condensing of the vapor effects evacuation of the bag interior.

REFERENCES:
patent: 2768487 (1956-10-01), Day et al.
patent: 4027456 (1977-06-01), Wilson
patent: 4148933 (1979-04-01), Janovtchik
patent: 4164111 (1979-08-01), Di Bernardo
patent: 4236672 (1980-12-01), Koeberle
patent: 4363205 (1982-12-01), Hollander

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